It's unclear what prompted the shooting beyond being some type of dispute that boiled over during a concert performance at the club, but we do know that someone evidently fired wildly into the crowd, leaving a horrific scene.

There's video of part of the alleged incident going around on social media, too — watch with caution as the video contains the sound of dozens of shots fired (below):

Obviously, this scary shooting has shaken up many people including those in Hollywood, as well as several politicians in Washington D.C., as numerous public figures have since taken to Twitter to weigh in on the situation. Be sure to take a look at their reactions (below).

UPDATE 3:09 P.M. EST: It is now being reported the murder-suicide stemmed from a domestic violence situation.

UPDATE 2:50 P.M. EST:AP confirms that the two adult victims involved — the suspect and a teacher — are in fact fatalities.

It is being reported today that multiple people have been injured in a shooting at North Park School in San Bernardino, California.

There are reportedly four victims at this time — two of whom are students who have been taken to a hospital. It is also said that the shooter is down. The San Bernardino Police Department is stating that they believe this was an apparent murder-suicide:

We believe this to be a murder suicide. Happened in a class room. Two students have been transported to the hospital.
— Chief Jarrod Burguan (@SBPDChief) April 10, 2017

Gasser was immediately detained and taken into police custody, but at this point remains uncharged as investigators figure out what happened to cause the incident, and McKnight's tragic death.

Now, though, more reporting is coming out about Gasser himself, and there is one disturbing, unbelievable coincidence: nearly eleven years ago, Gasser had a VERY similar road rage incident at THE EXACT SAME INTERSECTION!

According to police, on February 20, 2006, Gasser was driving erratically in a red pickup truck when another driver

At least one person has been killed after a shooter opened fire near a California polling place on Tuesday.

According to the Azusa Police Department, a suspect killed one person and injured three others in a residential area near Memorial Park Recreation Center, which is a polling place in this year's election.

Afterwards, Cirque du Soleil released a statement about the accident, noting that crew members rushed to Arnaud's aid and immediately transported him to a local hospital, where he was pronounced dead sometime later.